Ultrasonic drilling device

Abstract

The utility model relates to the technical field of machine tool machining, and discloses an ultrasonic drilling device which comprises a drill body, a drill sleeve and a feed driving assembly, the drill body comprises an energy converter, an amplitude-change pole and a gun handle, the energy converter is fixedly connected with the amplitude-change pole, and the output end of the gun handle is fixedly connected with the amplitude-change pole and drives the amplitude-change pole to rotate; the drill bushing is provided with a first channel through which a drill bit fixedly mounted at the front end of the amplitude-change pole can penetrate; the fixed end of the feeding driving assembly is arranged on the gun handle, the movable end of the feeding driving assembly is fixedly connected with the drill sleeve, and the feeding driving assembly drives the drill body to reciprocate in the axial direction of the amplitude-change pole. According to the utility model, the cutting force can be reduced, the service life of the cutter can be prolonged, the drilling accuracy and efficiency can be improved, the drilling consistency and stability can be improved, the stable quality of the drilling operation can be ensured, and the labor intensity of an operator can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool processing, in particular to an ultrasonic drilling device. Background Art

[0002] Currently, when using a handheld drill, on-site workers are required to hold the drilling equipment and manually determine the feed rate and feed direction, which leads to unstable quality of the drilling operation and high labor intensity for the workers. Utility Model Content

[0003] The purpose of the utility model is to provide an ultrasonic drilling device, which can reduce the labor intensity of workers while ensuring the stability of the quality of drilling operations.

[0004] In order to achieve the above object, the utility model provides an ultrasonic drilling device, comprising:

[0005] The drill body comprises: a transducer, a horn and a gun handle, wherein the transducer is fixedly connected to the horn, and the output end of the gun handle is fixedly connected to the horn and drives the horn to rotate;

[0006] a drill sleeve having a first passage through which a drill bit fixedly mounted at the front end of the horn can pass;

[0007] A feed drive assembly, wherein the fixed end of the feed drive assembly is arranged on the gun handle, the movable end of the feed drive assembly is fixedly connected to the drill sleeve, and the feed drive assembly drives the drill body to reciprocate along the axial direction of the amplitude rod.

[0008] In some embodiments of the present application, the ultrasonic drilling device also includes: a guide assembly that can guide the movement direction of the feed drive assembly, the guide assembly includes a first guide member and a second guide member that are slidably connected to each other, the first guide member is connected to the drill sleeve, the second guide member is connected to the gun handle, and the movable end of the feed drive assembly is fixedly connected to an end of the first guide member close to the drill sleeve.

[0009] In some embodiments of the present application:

[0010] The inner cavity of the first guide member and the inner cavity of the second guide member jointly form a second channel for the drill bit to pass through, and the first channel is communicated with the second channel.

[0011] In some embodiments of the present application, a chip removal sleeve is fixedly connected between the drill sleeve and the guide assembly, the chip removal sleeve has a third channel for the drill bit to pass through, the first channel and the second channel are connected through the third channel, and a connecting hole connected to the third channel is provided on the outer wall of the chip removal sleeve, and the connecting hole is used to connect to the vacuum unit.

[0012] In some embodiments of the present application, further comprising:

[0013] a damper, a fixed end of which is arranged on the gun handle;

[0014] A connecting block is installed at one end of the first guide member close to the drill sleeve, the movable end of the feed drive assembly is fixedly connected to the first guide member through the connecting block, and the movable end of the damper is tightly arranged against the connecting block.

[0015] In some embodiments of the present application, the ultrasonic drilling device further includes:

[0016] A connecting plate is provided on the gun handle, the fixed end of the feed drive assembly and the fixed end of the damper are both mounted on the connecting plate, and the second guide is mounted on the front end surface of the connecting plate.

[0017] In some embodiments of the present application, further comprising:

[0018] A damping lock ring is mounted on the connecting plate, and the fixed end of the damper is passed through the damping lock ring.

[0019] In some embodiments of the present application:

[0020] It also includes a baffle mounted on the connecting plate, and the fixed end of the feed drive assembly is fixedly connected to the baffle.

[0021] In some embodiments of the present application, the drill body further includes an outer shell that can accommodate the amplitude converter and the transducer, the output end of the gun handle extends into the outer shell to be transmission-connected to the amplitude converter, and the front end of the amplitude converter extends out of the outer shell, and the connecting plate is arranged on the outer shell; the drill body further includes a locking sleeve and a pressure plate, the locking sleeve is fixedly connected to the rear end surface of the connecting plate, and the locking sleeve and the pressure plate cooperate to lock the outer shell onto the gun handle.

[0022] In some embodiments of the present application:

[0023] It also includes a retaining screw and a drilling template, the drilling template has a through hole, the drill sleeve is inserted in the through hole; the drilling template also has a retaining hole, the retaining screw is installed in the retaining hole, the outer peripheral surface of the drill sleeve is provided with a limiting step, and the retaining screw is tightly arranged against the limiting step.

[0024] The utility model provides an ultrasonic drilling device, which has the following advantages compared with the prior art:

[0025] The ultrasonic drill of the utility model comprises a drill body, a drill sleeve and a feed drive assembly. The drill body converts electromagnetic energy into mechanical energy through a transducer. Moreover, by arranging the drill sleeve and the feed drive assembly, the drill bit is restricted by the drill sleeve, and the feed drive assembly provides feed for the drill bit. This can not only reduce cutting force and extend tool life, but also achieve high drilling accuracy and efficiency, high drilling consistency and stability, ensure stable quality of drilling operations, and reduce operator labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of an ultrasonic drilling device according to an embodiment of the present utility model.

[0027] Figure 2 yes Figure 1 Enlarged schematic diagram of point A in the middle.

[0028] Figure 3 It is a cross-sectional view of an ultrasonic drilling device according to an embodiment of the present invention.

[0029] Figure 4 It is a partial structural diagram of the drive assembly, guide assembly and drilling gun body of an embodiment of the present utility model.

[0030] Figure 5 It is a partial structural diagram of an ultrasonic drilling device according to an embodiment of the present utility model.

[0031] Figure 6 yes Figure 5 Enlarged schematic diagram of point B in the middle.

[0032] In the figure, 1. drill body; 2. limit assembly; 3. feed drive device; 4. guide assembly; 5. chip removal sleeve; 6. damper; 7. damping lock ring.

[0033] 11. Outer shell; 12. Transducer; 13. Gun handle; 14. Drill bit; 15. Locking sleeve; 16. Pressure plate; 17. Amplitude transformer; 18. Transducer housing; 21. Drill template; 22. Drill sleeve; 23. Positioning screw; 211. Through hole; 212. Positioning hole; 221. First channel; 222. Limiting step; 223. Air-avoiding groove; 31. Feed drive assembly; 32. Connecting block; 33. Connecting plate; 34. Baffle; 41. Second channel; 42. First guide member; 43. Second guide member; 51. Third channel; 52. Connecting hole. DETAILED DESCRIPTION

[0034] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0037] In addition, in the description of the present invention, unless otherwise specified, “a plurality of” means two or more.

[0038] For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0039] Please refer to Figure 1 and Figure 3 An ultrasonic drilling device according to a preferred embodiment of the present invention includes a drill body 1, a limiting assembly 2 and a feed drive device 3.

[0040] The drill body 1 includes: a horn 17, a transducer 12, and a gun handle 13. The transducer 12 is fixedly connected to the horn 17, and the output end of the gun handle 13 is fixedly connected to the horn 17 and drives the horn 17 to rotate. The front end of the horn 17 can be installed with a drill bit 14.

[0041] The gun handle 13 drives the horn 17 and the transducer 12 to rotate. The transducer 12 converts electromagnetic energy into mechanical energy and transmits it to the drill bit 14 at the front end to achieve drilling operation.

[0042] The limiting assembly 2 includes a drill sleeve 22 having a first passage 221 therein for the drill bit 14 to pass through. The drill bit 14 passes through the first passage 221 so that the drill bit 14 can pass through the first passage 221 to process the workpiece located behind the drill sleeve 22 .

[0043] The feed drive device 3 includes a feed drive assembly 31, a movable end of which is connected to the drill sleeve 22 and a fixed end of which is arranged on the gun handle 13. The feed drive assembly 31 drives the drill body 1 to reciprocate along the axial direction of the horn 17, that is, the drill sleeve 22 moves relative to the horn 17, the transducer 12 and the gun handle 13, and the drill bit 14 reciprocates in the first channel 221.

[0044] Driven by the feed drive assembly 31, the drill bit 14 can move within the first channel 221 along the drill sleeve 22, replacing manual feed for the drill bit 14. This delivers high drilling accuracy and efficiency, high drilling consistency, and high stability, ensuring consistent drilling quality and reducing operator labor. Furthermore, the ultrasonic drill incorporates ultrasonic machining, reducing cutting forces and extending tool life. In this embodiment, the feed drive assembly 31 is a pneumatic cylinder, with the active end of the feed drive assembly 31 being a piston rod.

[0045] The gun handle 13 drives the drill bit 14 to rotate through the horn 17. The drill bit 14 rotates under the restriction of the drill sleeve 22. The feed drive assembly 31 drives the drill body 1 and the drill sleeve 22 to move relative to each other. The horn 17 drives the drill bit 14 to move axially along the drill sleeve 22 in the first channel 221. The drill bit 14 passes through the first channel 221 to perform drilling operations on the workpiece.

[0046] The ultrasonic drilling device of this embodiment utilizes a drill sleeve 22 and a feed drive assembly 31. The drill bit 14 is restrained by the drill sleeve 22 to prevent radial runout, while the feed drive assembly 31 provides feed for the drill bit 14. This results in high drilling accuracy and efficiency, as well as high drilling consistency and stability. This ensures consistent drilling quality and reduces operator labor intensity. Furthermore, ultrasonic machining can effectively suppress splitting and burring during the drilling process of carbon fiber composites.

[0047] In some embodiments, please refer to Figure 2 、 Figure 5and Figure 6 The limiting assembly 2 also includes a drilling template 21 and a retaining screw 23. The drilling template 21 has a through hole 211, and the drill sleeve 22 is inserted into the through hole 211. The drilling template 21 has a retaining hole 212, and the retaining screw 23 is installed in the retaining hole 212. A limiting step 222 is provided on the outer circumference of the drill sleeve 22. The retaining screw 23 is tightly arranged with the limiting step 222, that is, it is matched with the limiting step 222 to limit the relative movement of the drill sleeve 22 and the drilling template 21. In order to ensure that the retaining screw 23 can be tightly pressed against the limiting step 222, an air avoidance groove 223 is further provided on the outer circumference of the drill sleeve 22, and the air avoidance groove 223 is arranged adjacent to the limiting step 222. During use, the drill template 21 and the workpiece to be processed are fixed by a clamp, and then the drill body 1 is installed on the drill template 21 through the drill sleeve 22, and first the retaining screw 23 is installed in the retaining hole 212, and then the drill sleeve 22 is installed in the through hole 211 in a manner that the side of the drill sleeve 22 with the air avoidance groove 223 corresponds to the retaining screw 23, and then the drill sleeve 22 is rotated to make the limiting step 222 tightly connected with the retaining screw 23, so that the drill sleeve 22 is fixed on the drill template 21, limiting the relative movement between the drill sleeve 22 and the drill template 21, and the drill bit 14 passes through the first channel 221 and also passes through the through hole 211, and then the workpiece behind the drill template 21 is drilled.

[0048] The specific shape of the drilling template 21 can be adjusted according to the requirements of specific implementation. The drill sleeve 22 is set on the drilling gun body 1. The setting of the drill sleeve 22 and the drilling template 21 can reduce the vibration of the drill bit 14 and ensure the position accuracy of the drilling.

[0049] In some embodiments, please refer to Figure 4 The ultrasonic drilling device also includes a guide assembly 4, which guides the movement direction of the feed drive assembly 31. The two ends of the guide assembly 4 are connected to the gun handle 13 and the drill sleeve 22, respectively. The movable end of the feed drive assembly 31 is fixedly connected to the end of the guide assembly 4 near the drill sleeve 22, thereby achieving a fixed connection between the feed drive assembly 31 and the drill sleeve 22.

[0050] The guide assembly may include a first guide member 42 and a second guide member 43 that are slidably connected to each other. The first guide member 42 is fixedly connected to the drill sleeve 22, the second guide member 43 is fixedly connected to the gun handle 13, and the movable end of the feed drive assembly 31 is fixedly connected to the end of the first guide member 42 that is closest to the drill sleeve. That is, the first guide member 42 is disposed in front of the second guide member 43. The relative sliding of the first guide member 42 and the second guide member 43 can guide the movement direction of the drill body 1 driven by the feed drive assembly 31, allowing the drill bit 14 to more smoothly pass through the first channel 221 to complete the processing of the workpiece.

[0051] The guide member can be a rod-shaped structure or a sleeve structure. In the rod-shaped structure, both guide members can be mounted on a connecting plate, with one guide member being movable relative to the connecting plate, i.e., the two guide members can move relative to each other, thereby guiding the feed drive assembly. In this application, a sleeve structure is used as an example.

[0052] The inner cavity of the first guide member 42 and the inner cavity of the second guide member 43 together form a second channel 41 for the drill bit 14 to pass through, and the second channel 41 is communicated with the first channel 221 .

[0053] The guide assembly 4 can guide the drill body 11 to move relative to the drill sleeve 22 in the axial direction of the drill bit 14, so that the drill bit 14 moves axially along the drill sleeve 22 in the first channel 221, and the axial direction of the drill bit 14 is parallel to the extension direction of the first channel 221.

[0054] In addition, through such a structure, compared with the solution in which the guide structure is set on one side of the gun handle, the overall structure of the ultrasonic drilling device of the present application is more centralized and has high overall strength. The driving device 31 can be selected with greater power, which is suitable for processing materials that are more difficult to process.

[0055] The transducer 12, the first channel 221, and the second channel 41 are coaxially arranged. In other words, the axial direction of the transducer 12, the extending direction of the first channel 221, the extending direction of the second channel 41, and the axial direction of the drill bit 14 are coaxially arranged to ensure that the drill bit 14 can be smoothly extended from the first channel 221.

[0056] In some embodiments, the ultrasonic drilling device also includes a chip removal sleeve 5, the two ends of which are respectively connected to the drill sleeve 22 and the guide assembly 4, that is, the chip removal sleeve 5 is located between the drill sleeve 22 and the guide assembly 4, and the chip removal sleeve 5 has a third channel 51 for the drill bit 14 to pass through. The first channel 221 and the second channel 41 are connected through the third channel 51, and a connecting hole 52 connected to the third channel 51 is provided on the outer wall of the chip removal sleeve 5, and the connecting hole 52 is used to connect to the vacuum unit.

[0057] When in use, the drilling template 21 and the workpiece to be processed are fixed by a clamp. A gap can be set between the drilling template 21 and the workpiece to facilitate the discharge of large debris, or a chip guide groove can be set on the drilling template 21 to discharge large debris. In this way, there is no need to set a gap between the drilling template 21 and the workpiece, which has better processing stability.

[0058] Small chips and dust are discharged through the connecting hole 52 in the chip removal sleeve 5. To ensure drilling accuracy, the drill bit 14 and the drill sleeve 22 are fitted together. When the drill bit 14 is fed, friction between the drill bit 14 and the drill sleeve 22 generates heat. The debris and dust generated during processing also increase friction, potentially causing the drill bit 14 to become stuck relative to the drill sleeve 22. The chip removal sleeve 5 is connected to a vacuum unit through the connecting hole 52, which not only removes dust and small chips but also reduces the temperature of the drill sleeve 22 and drill bit 14, improving processing efficiency.

[0059] The ultrasonic drilling device also includes a damper 6, a fixed end of which is arranged on the gun handle 13; the feed drive device 3 also includes a connecting block 32, which is installed at one end of the first guide member 42 close to the drill sleeve, so that the movable end of the drive assembly 3 is connected to the first guide member 42 through the connecting block 32, and the movable end of the damper 6 is tightly pressed against the connecting block 32.

[0060] The damper 6 controls the movable end of the feed drive 31, thereby stabilizing the movement speed of the cylinder piston rod. Furthermore, a knob is provided at the rear end of the damper 6 to adjust the resistance, thereby varying the feed speed for different processing materials. The damper 6 can be adjusted in either one-way or two-way mode. In two-way mode, the movable end of the damper 6 is fixedly connected to the connecting block 32, thereby controlling the reciprocating speed of the cylinder piston rod. In one-way mode, the damper 6 is tightly connected to the connecting block 32.

[0061] The axial direction of the transducer 12, the movement direction of the movable end of the feed drive 31, and the movement direction of the movable end of the damper 6 are arranged in parallel. In other words, the axial direction of the transducer 12, the movement direction of the movable end of the feed drive 31, the movement direction of the movable end of the damper 6, the axial direction of the drill bit 14, the extension direction of the first channel 221, the extension direction of the second channel 41, the extension direction of the third channel 51, and the axial direction of the through hole 211 are all arranged in parallel.

[0062] The feed drive device 3 also includes a connecting plate 33, which is arranged on the gun handle 13. The fixed end of the feed drive assembly 31 and the fixed end of the damper 6 are both mounted on the connecting plate 33, and the second guide member 43 is mounted on the front end surface of the connecting plate 33.

[0063] The drill body 1 also includes an outer housing 11 that can accommodate the horn 17 and the transducer 12. The output end of the gun handle 13 extends into the outer housing 11 to be transmission-connected with the horn 17, that is, connected to the horn 17 and drives the horn 17 to rotate, and the front end of the horn 17 extends out of the outer housing 11; and a connecting plate 33 is provided on the outer housing 11, so that the feed drive assembly 31 is disposed on the outer housing 11 via the connecting plate 33.

[0064] The drill body 1 also includes a transducer housing 18, and the rear end of the horn is fixedly connected to the transducer housing 18. The transducer 12 fixedly connected to the horn 17 is built into the transducer housing 18. The output end of the gun handle 13 is connected to the rear end of the transducer housing 18, thereby realizing connection with the horn 17. In other embodiments, the output end of the gun handle 13 can also pass through the transducer 12 and be connected to the horn 17 to realize driving of the transducer 12 and the horn 17.

[0065] The damper 6 is mounted on the outer shell 11 via a connecting plate 33 . The connecting plate 33 is provided with a plurality of mounting holes. The position of the damper 6 on the connecting plate 33 can be adjusted according to the stroke of the drill bit 14 .

[0066] In this embodiment, the ultrasonic drilling device further includes a damping lock ring 7, and the damper 6 is mounted on the connecting plate 33 via the damping lock ring 7. In other embodiments, other forms of mounting members may also be provided to connect the damper 6 and the connecting plate 33.

[0067] In this embodiment, the feed drive device 3 further includes a baffle 34, through which the fixed end of the feed drive assembly 31 is mounted on the connecting plate 33. In this embodiment, the baffle 34 is formed in the shape of a bent angle iron, with one portion connected to the feed drive assembly 31 and the other portion connected to the connecting plate 33. In other embodiments, other types of mounting members may be provided to connect the feed drive assembly 31 and the connecting plate 33.

[0068] The drilling gun body 1 also includes a locking sleeve 15 and a pressure plate 16. The locking sleeve 15 is connected to the rear end surface of the connecting plate 33. The locking sleeve 15 and the pressure plate 16 are connected together to lock the outer shell 11 to the gun handle 13. The outer shell 11 is provided with an opening, and the locking sleeve 15 and the pressure plate 16 are arranged around the opening to tighten the outer shell 11 and the gun handle 13.

[0069] The feed drive device 3, the guide assembly 4 and the lock sleeve 15 for locking the gun handle 13 are all arranged on the connecting plate 33. These components are connected to the outer shell 11 through the connecting plate 33, which facilitates the assembly of the ultrasonic drilling device.

[0070] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. An ultrasonic drilling device, characterized in that: include: The drill body comprises: a transducer, a horn and a gun handle, wherein the transducer is fixedly connected to the horn, and the output end of the gun handle is fixedly connected to the horn and drives the horn to rotate; a drill sleeve having a first passage through which a drill bit fixedly mounted at the front end of the horn can pass; A feed drive assembly, wherein the fixed end of the feed drive assembly is arranged on the gun handle, the movable end of the feed drive assembly is fixedly connected to the drill sleeve, and the feed drive assembly drives the drill body to reciprocate along the axial direction of the amplitude rod.

2. The ultrasonic drilling device according to claim 1, characterized in that It also includes a guide assembly that can guide the movement direction of the feed drive assembly, the guide assembly includes a first guide member and a second guide member that are slidably connected to each other, the first guide member is connected to the drill sleeve, and the second guide member is connected to the gun handle, and the movable end of the feed drive assembly is fixedly connected to an end of the first guide member close to the drill sleeve.

3. The ultrasonic drilling device according to claim 2, characterized in that: The inner cavity of the first guide member and the inner cavity of the second guide member jointly form a second channel for the drill bit to pass through, and the first channel is communicated with the second channel.

4. The ultrasonic drilling device according to claim 3, wherein: A chip removal sleeve is fixedly connected between the drill sleeve and the guide assembly. The chip removal sleeve has a third channel for the drill bit to pass through. The first channel and the second channel are connected through the third channel. A connecting hole connected to the third channel is provided on the outer wall of the chip removal sleeve. The connecting hole is used to connect to the vacuum unit.

5. The ultrasonic drilling device according to claim 2, wherein: Also includes: a damper, a fixed end of which is arranged on the gun handle; A connecting block is installed at one end of the first guide member close to the drill sleeve, the movable end of the feed drive assembly is fixedly connected to the first guide member through the connecting block, and the movable end of the damper is tightly arranged against the connecting block.

6. The ultrasonic drilling device according to claim 5, characterized in that: It also includes a connecting plate, which is arranged on the gun handle, and the fixed end of the feed drive assembly and the fixed end of the damper are both installed on the connecting plate, and the second guide is installed on the front end surface of the connecting plate.

7. The ultrasonic drilling device according to claim 6, characterized in that Also includes: A damping lock ring is mounted on the connecting plate, and the fixed end of the damper is passed through the damping lock ring.

8. The ultrasonic drilling device according to claim 6, characterized in that: It also includes a baffle mounted on the connecting plate, and the fixed end of the feed drive assembly is fixedly connected to the baffle.

9. The ultrasonic drilling device according to claim 6, characterized in that: The drill body also includes an outer shell that can accommodate the amplitude transformer and the transducer, the output end of the gun handle extends into the outer shell to be transmission-connected with the amplitude transformer, and the front end of the amplitude transformer extends out of the outer shell, and the connecting plate is provided on the outer shell; the drill body also includes a locking sleeve and a pressure plate, the locking sleeve is fixedly connected to the rear end surface of the connecting plate, and the locking sleeve and the pressure plate cooperate to lock the outer shell on the gun handle.

10. The ultrasonic drilling device according to claim 1, wherein: It also includes a retaining screw and a drilling template, the drilling template has a through hole, the drill sleeve is inserted in the through hole; the drilling template also has a retaining hole, the retaining screw is installed in the retaining hole, the outer peripheral surface of the drill sleeve is provided with a limiting step, and the retaining screw is tightly arranged against the limiting step.

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